Page 162 - Making PIC Microcontroller Instruments and Controllers

i54 USlt{G LIOUID CRYSTAL OISPLAYS! AN EXIEI{DED INFOnMATIO nESOURCE

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:liFlSillqi**i:l wiring diagram: LCD backpack using a PIC 16F84. {The dala can be programmed
to come in at any free line. 11does not have 10 be on pin B7,You set lhe line you want io use In
Program
9.1.)

Liquid Crystal Exercises
Display

These liquid crystal exercises are to be performed on the LAB-XI board.
l.Write a program to put the 26letters ofthe alphabet and the ten numerals in the
40 spaces that are avai)able on Iine l. lnsert four spaces between the numbers
and the alphabet to fill in t]}e four remaining spaces. Once all the characten have
. been efltered, scroll t}Ie 40 chamclers back and fortl endlessly though lhe 20
spaces visible on line l.
2. Write a program to bubble the 26 capital letters of the alphabettbrough the numbers
"A"
0 to 9 on line 2 ofthe LCD. (This meansr First, put the numbers on line 2. Then,
"0" "A"
takes the place ofthe and all the numbers move over. Then, the takes the
"l" "0"
place of the and the moves back to position 1 and so on till it gets past
"B"
the L Then, the starts it way across the numbers, and so forth.)
3. wdte a program to write the numbers 0 to 9 upside down on line L Wait I second
and then flip the numbers right side up one by one. Provide a time delay between
chanses. LooD.